Motor for meters.



O. E. CLARK MOTOR FOR METERS.

APPLICATION FILED DEC. 19. m3.

Patented Oct. 31, 1916.

2 SHEETSSHEET 1.

W; O/iZd/ZT 6 /476.

akin M O. E. CLARK.

MOTOR FOR METEB$.. APPLICATIQN F-lLED M019, m3.

Patent-ed Oct. 31, 1916;

Z SHEETSSHEET 2 UNITED STATES PATENT OFFICE.

OMAR ELMER CLARK,-OF DENV ER, COLORADO, ASSIGiNOB. TO THE :DEENVER ROCK DRILL I MANUFACTURING COMPANY OF DENVER, 'COLORADO, A CORPORATION OF- DELA- WARE.

- MOTOR FOB, METERS.

Bat'eiited Oct. 31, 1916.

Application filed December 19, 1913. Serial No. 807,695.

To all whom it may concern Be itknown that I, OMAR CLARK, a citizen of the United States, residing at Denver, in the county'of Denver and State of Colorado, have invented new and useful Improvements. in Motors for *Meter's, Lof -which thef'following is a specification. The present invention relates t motors for meters, and in *the embodiment disclosed, is particularly intended and adapted for that class of meters employed for measuring expansible fluids,'such as air under pressure. V

The primary ture of the piston type, which will operate accurately in order to measure and register the amount of air or the like passing through the same, irrespective of the speed or volume, and so constructed that it requires but little energy to effect the operation of the parts and the actuation of the registering mechanism.

A further and important object i's to produce a simple structure of this character made up of comparatively few and inex- I pensive parts, so that it may be manufac- .tured at comparatively small cost, and is not likely to becomederanged. One embodiment of the invention is il-lus-' trated in the where1n: V

Figure l is a longitudinal sectional view accompanying" drawings;

' in a horizontal plane of the meter. Fig. 2

is a detail sectionalview through a portion .of the piston, showing the rifle bar and nut.

Fig. 3 is an end'elevation of one of the cylinder heads. Fig. 4 is a vertical sectional view therethrough. Fig. 5is a horizontal f section. Fig. 6 is an end elevation of one of the valves.

- view through a portion of one of the valves, showing the mounting therefor. 1

Similar reference numerals designate corresponding parts in allthe figures of the drawings.

In the embodiment disclosed, a cylinder. member is employed, comprising, a cylindrical body 8, to the ends of which are fastened heads 9 and 9 by means of screws or other devices 10. These heads have axial bores, which are in turn closed by caps'll and 11 secured thereto byscrews 12. A

,17, therebyforming chambers object is to provide :a'struo through a passageway 27 extending. there- :openings, respectively designated 31, 32,3'3233 7 wide to cover one set of the ports through Fig. 7 is a detail sectional 'positely extending flanges 16, which have.

overhanging and outwardly projecting ribs 18-on oppos te s des of-the central web 15. v In one of the'hea'ds, as 9 ,is formed'an intake port 19 surroundedby aninternally threaded "nipple 2O toipermit' the attachment of a supply pipeiajIn the other head is formed a, correspondi' port 21. From the intake port 19, a passageway 22 leads to an} annular groove 23 formed in the head, and. another passageway 24, leading from said port 19- through the body 8 of the cylinder munication with a corresponding annular groove 25 formedfirrthe'opposite head 9. Another groove 26 is formed inj the head 9 outside the groove 23, and isiin'communicationwith the outlet or exhaustvport 21 from and longitudinally through-*the body 8 of the cylindermen'iber,v as wi'l l be clear by reference to Fig. 1, this passagewayj'being partly formed by an annular groove 28 formed in the head 9 outside thegroove25.

Fitted into the bores of the two heads 9 and.9 are outwardly tapered bushings 29 having cylindrical bores 30 formin g' 1ya=lve seats or bearings, and these bushings '-h.ave

and 34 that afford communication between. the grooves 26, 23, 25 and 28 and the -1in' teriors ofsaid bushings; Sli'lably mounted" in the bushings, are valves 35, which, as} clearly shown in Fig. 6, comprise hubs 36,

carry rims 38, which fit the bores of the bushings. Each of the rims 38 is sufficiently the bushings 29, as will be obvious, and the valves are movable to. alternately cover. and

uncover the ports of each set.- These valves are connected by a rod or stem 39' that passes through the hubs 36 of the valves, and

through bushings 40 inserted in said hubs-100 The bushings 40 are located, on the ends of. the rod or stem 39, which, are reduced, asj shown at 41, and said bushings are provided valve hubs, prevent the detachment of the valves from the bushings, and these washers-arein turnheld in place by cap nuts 44 thipade'd on the ends of the rod or stem 110'- ngoutlet or exhaust I member, is in com-- 4 provided with radial spokes 37 that-in turn,"-

With this stru ,:ture, the valves are permitted to float loosely on the connection, the distance between the flange 4'2 and the washer 43 being slightly greater than the length of the hub of the valve, and the diameter of the hole through the hub is slightly greater also than the diameter of the bushing engaged therein. The function of this loose tit is to take care of any misalinement of the several parts. which n'iight affect the easy movement o l the valve. The cap nuts it also serve the double purpose of holding or elamping' together the parts. and furthermore constitute a positive and accurate stop. their outer ends abutting against hardened pads in the form of headed plugs 47) that are inserted in the caps 11. and 11 in the paths of movement of said cap nuts.

- It will also he noted by reference to Fig. 1 that the inner ends of the valve casing bushings 21 project beyond the inner ends of the heads 9 and El. and that said ends ,of the heads are provided with annular ribs or flanges it; spaced from the projecting ends of said bushings. thereby forming annular grooves 47 in the inner ends of the hubs. which grooves receive the projecting bosses or ribs 17 on the opposite ends of the piston- As a result, pockets are formed that receive said ribs 1T, and the ribs inasmuch as they trap air therein. form with the pockets or grooves. dash pots which cushion the piston without jar or vibration at the ends of its stroke.

The piston 13 is freely slidable upon the rod orstem 59, being provided with a packing bushing ts surrounding said rod or stem. There are also placed on the said rod or stem 39. coiled springs 49 that are located on opposite sides of the piston and bear against the flanges 42, being alternately borne against by the piston during its reciprocation. These springs constitute the means for actuating the valves. and are compressed. as will be evident. by the piston. lhe 'alves are, however. normally locked .against movement while the springs are being-compressed, and for this purpose, latches 50 are pivoted, as shown at 51 in the heads of the cylinder member and engage the washers L43. Actuating plunger rods 51, slidably mounted in bearings 52 carried by the bushings 99. are pivoted. as shown at 5 to the latches. and springs 54. coiled about the pivots 51 and 5?) and bearing against the caps 11 and 11. serve to urge the latches into their operative positions.

Suitably mounted on one of the caps, as 11. is a register or counting mechanism,

" designated which-may he of any well known or desired construction. having an actuating shaft 56 that is journaled in a bushing 57 placed in the cap 11, and is keyed, as shown at 58 to the trunnion 59 of W a rifle bar 60 journaled at one end by means of said trunnion in the bushing 57 and journaled at its other end in a bushing or thimble (30 in the opposite cap 11. A rifle nut (31 in the piston is engaged with the rifle bar, and is held in place and against movement with respect to the piston by a suitable set screw 62.

lriefly described. the operation of the apparatus is as follows: Air or other fluid is supplied to the motor from any suitable source, through the intake 19, and will thus find a ecess to the grooves and 25 by means of the passageways 22 and 24. The valves. being in the position shown in Fig. 1, the fluid will enter through the ports 2:31 into the piston chamber 1t at the left side of the piston, and thus drive said piston to the right. the fluid in advance of said piston, passing through the right hand valve 37. and through the ports 31 and the groove 28 to the outlet or exhaust 21. by means of which it will. be delivered from the meter. As the piston moves to the right, the spring 49 in advance of the same, will be compressed or placed under tension, but the valves 35 cannot move, inasmuch as they are locked by the latch 50 at the right hand end of the machine. As the piston continues to advance, however, it will strike the projecting end of the plunger rod 51 forcing it longi tudinally against the action of the spring 54, and causing the latch 50 to become disen gaged from the latch mechanism. hen thus disengaged, the spring 49 will act to force both valves simultaneously to the right, thereby covering the ports 3t and 31 and opening the ports 33 and 32. \Vhen this movement takes place, and fluid will flow through the passageway 24 and groove 25 into the right hand end of the piston chamber 14, thereby forcing the piston to the left, while the fluid in advance of said piston, will now pass through the port 32, the groove 26, the passageway 27, and out through the port 21 from the machine. As

- the'piston advances, the left hand spring 49 will be compressed, but the valves will not move under the action of the spring until the piston strikes the left hand plunger rod 51 and releases the opposite latch. The piston therefore, will be moved back and forth and during its reciprocatory movement it will oscillate the rifle bar 60 one tenth of a revolution on each stroke. This turning movement will be imparted to the shaft 56 of the register, and therefore on each double stroke of the motor, the'said register will be operated one increment.

From the foregoing, it is thought that the construction, operation and many ad vantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages ofthe invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is g 1. In a structure of the character set forth, the combination with a cylinder member and a piston operating therein, of a valve, a spring bearing against the valve and borne against by the piston during its movement, and a latch normally holding the valve against movement and operated by the piston.

2. In a structure of the character set forth, the combination with a cylinder member having intake and outlet ports in both ends thereof, of a piston operating in the cylinder member between the ports, a valve for each set of ports movable longitudinally of the cylinder member, a longitudinally movable rod directly connectingthe valves and fixed thereto, and means actuated by the piston for controlling the movement of both valves.

3. In a structure of the character set forth, the combination with a cylinder member having intake and outlet ports in both ends thereof, of a piston operating in the cylinder member between the -ports,'tubular valve seats for the ports disposed longitudinally of the cylinder member, longitudinally movable valves within the seats, Shiftable alternately over the ports, a rod directly connecting the valves,.-and means actuated by the piston for controlling the movement of both valves.

4. In-a structure of. the character set forth, the combination with a cylinder member having intake and outlet ports in both ends thereof, of a piston operating in the- 7 cylinder member between the ports, tubular valve seats for the ports disposed longitudinally ofthe cylinder member, a rod directly connecting the valves, ,said piston being slidable upon therod, springs on the rod interposed between the piston and the valves, latches for holding the valves against movement, and actuating plungers for the latches extending through the valves and located in the path of the piston.

5. In a structure of the character set forth, the combination with a cylinder member having a tubular valve seat and lateral inlet and outlet ports opening thereinto, of a valve operating in the seat and comprising a hub and a rim with spaced spokes connecting the same, said rim being shiftable between the ports, a valve stem mounted in the hub, a piston operating in thecylinder member, and meansactuated by the piston for operating the valve.

6. In a structure of the character 'set actuated by the piston for valve.

forth, the combination with acylinder member comprising a body and a head therefor, said head having a longitudinally disposed tubular valve seat, and lateral inlet and outlet ports opening thereinto, a valve operating in the seat and comprising a hub and a rim with spaced spokes connecting the same, said rim being shiftable between the ports, a valve stem mounted in the hub, a piston operating in the cylinder member,. and slidable upon the-valve stem, and means operating the 7 In a structure of the character set forth, the combination with a cylinder member having a head with inlet and outletpassageways', of a detachable bushing in the head having lateral ports communicating with the passageways, a valve slidablelongitu dinally in the-bushing and having a rim movable laterally to positions across the lat her comprising'a body and detachable heads for the body, said heads having inlet and outlet passageways, of detachable tapered bushings located in the head longitudinally of the cylindermember and having lateral ports communicating with the passageways,

a valve in each bushing slidable longitudinally of the cylinder member, each of said valves comprisinga hub and a rim movable over the ports, and spokes connecting the hub and rim, a rod directly connecting the hubs and extending longitudinally through the cylinder member, a, piston slidable in "the cylinder member upon the rod, springs interposed between the pistons and the heads, a latch cooperating with each valve to hold it against movement, and a plunger 11 5 ,for-v each latch located in the path of the piston and extendingthrough the adjacent" valve. f U I In testimony whereof I have hereunto Set my hand in presence of two subscribing witnesses.

OMAR ELMER CLARK. Witnesses W. H, LEONARD, A, W. OAKES. 

